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tmux 2.4

    1: /* $OpenBSD$ */
    2: 
    3: /*
    4:  * Copyright (c) 2010 Nicholas Marriott <nicholas.marriott@gmail.com>
    5:  *
    6:  * Permission to use, copy, modify, and distribute this software for any
    7:  * purpose with or without fee is hereby granted, provided that the above
    8:  * copyright notice and this permission notice appear in all copies.
    9:  *
   10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   14:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
   15:  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
   16:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   17:  */
   18: 
   19: #include <sys/types.h>
   20: 
   21: #include <stdlib.h>
   22: 
   23: #include "tmux.h"
   24: 
   25: static int	tty_acs_cmp(const void *, const void *);
   26: 
   27: /* Table mapping ACS entries to UTF-8. */
   28: struct tty_acs_entry {
   29: 	u_char	 	 key;
   30: 	const char	*string;
   31: };
   32: static const struct tty_acs_entry tty_acs_table[] = {
   33: 	{ '+', "\342\206\222" },	/* arrow pointing right */
   34: 	{ ',', "\342\206\220" },	/* arrow pointing left */
   35: 	{ '-', "\342\206\221" },	/* arrow pointing up */
   36: 	{ '.', "\342\206\223" },	/* arrow pointing down */
   37: 	{ '0', "\342\226\256" },	/* solid square block */
   38: 	{ '`', "\342\227\206" },	/* diamond */
   39: 	{ 'a', "\342\226\222" },	/* checker board (stipple) */
   40: 	{ 'f', "\302\260" },		/* degree symbol */
   41: 	{ 'g', "\302\261" },		/* plus/minus */
   42: 	{ 'h', "\342\226\222" },	/* board of squares */
   43: 	{ 'i', "\342\230\203" },	/* lantern symbol */
   44: 	{ 'j', "\342\224\230" },	/* lower right corner */
   45: 	{ 'k', "\342\224\220" },	/* upper right corner */
   46: 	{ 'l', "\342\224\214" },	/* upper left corner */
   47: 	{ 'm', "\342\224\224" },	/* lower left corner */
   48: 	{ 'n', "\342\224\274" },	/* large plus or crossover */
   49: 	{ 'o', "\342\216\272" },	/* scan line 1 */
   50: 	{ 'p', "\342\216\273" },	/* scan line 3 */
   51: 	{ 'q', "\342\224\200" },	/* horizontal line */
   52: 	{ 'r', "\342\216\274" },	/* scan line 7 */
   53: 	{ 's', "\342\216\275" },	/* scan line 9 */
   54: 	{ 't', "\342\224\234" },	/* tee pointing right */
   55: 	{ 'u', "\342\224\244" },	/* tee pointing left */
   56: 	{ 'v', "\342\224\264" },	/* tee pointing up */
   57: 	{ 'w', "\342\224\254" },	/* tee pointing down */
   58: 	{ 'x', "\342\224\202" },	/* vertical line */
   59: 	{ 'y', "\342\211\244" },	/* less-than-or-equal-to */
   60: 	{ 'z', "\342\211\245" },	/* greater-than-or-equal-to */
   61: 	{ '{', "\317\200" },   		/* greek pi */
   62: 	{ '|', "\342\211\240" },	/* not-equal */
   63: 	{ '}', "\302\243" },		/* UK pound sign */
   64: 	{ '~', "\302\267" }		/* bullet */
   65: };
   66: 
   67: static int
   68: tty_acs_cmp(const void *key, const void *value)
   69: {
   70: 	const struct tty_acs_entry	*entry = value;
   71: 	u_char				 ch;
   72: 
   73: 	ch = *(u_char *) key;
   74: 	return (ch - entry->key);
   75: }
   76: 
   77: /* Retrieve ACS to output as a string. */
   78: const char *
   79: tty_acs_get(struct tty *tty, u_char ch)
   80: {
   81: 	struct tty_acs_entry *entry;
   82: 
   83: 	/* If not a UTF-8 terminal, use the ACS set. */
   84: 	if (tty != NULL && !(tty->flags & TTY_UTF8)) {
   85: 		if (tty->term->acs[ch][0] == '\0')
   86: 			return (NULL);
   87: 		return (&tty->term->acs[ch][0]);
   88: 	}
   89: 
   90: 	/* Otherwise look up the UTF-8 translation. */
   91: 	entry = bsearch(&ch,
   92: 	    tty_acs_table, nitems(tty_acs_table), sizeof tty_acs_table[0],
   93: 	    tty_acs_cmp);
   94: 	if (entry == NULL)
   95: 		return (NULL);
   96: 	return (entry->string);
   97: }